Abstract: A display control method for a peripheral device shared by a plurality of user terminals includes: storing a connection history of a user terminal for connecting the peripheral device; storing settings information specifying an operation of the peripheral device, the settings information being associated with identification information of the user terminal; selecting settings information stored in the storing settings information or identification information of a user terminal on the basis of the connection history stored in the storing a connection history; and displaying settings information or identification information selected in the selecting.

Abstract: A display control method for a peripheral device shared by a plurality of user terminals includes: storing a connection history of a user terminal for connecting the peripheral device; storing settings information specifying an operation of the peripheral device, the settings information being associated with identification information of the user terminal; selecting settings information stored in the storing settings information or identification information of a user terminal on the basis of the connection history stored in the storing a connection history; and displaying settings information or identification information selected in the selecting.

Abstract: A network controller including a virtual network setter that sets a virtual communication interface; a dummy packet generator that obtains communication progress information representing a communication progress state of communication of the second processing device with the connection destination device by causing the virtual communication interface to process a dummy packet that causes a receiver of the dummy packet to falsely recognize that the dummy packet is transmitted from the connection destination device; a reset packet generator that generates a reset packet containing the communication progress information; and a reset packet processor that removes, based on the reset packet, connection record information of the second processing device and the connection destination device, the connection record information being stored in the second processing device. This configuration prevents congestion when a processor is switched to another in a cluster system from occurring.

Abstract: An information processing device includes a plurality of processing modules. One of the plurality of processing modules includes a storage unit storing configuration information for defining the configuration of the information processing device. When a request related to the configuration information in the storage unit is received from an external terminal, the one processing module performs the request. When the requests are received from one request source in the external terminal, each processing module performs conversion to replace a transmission source address and a port number of each request with the same internal address and internal port number. The information processing device determines whether or not to permit performing each request on the basis of the internal address and the internal port number replaced by the conversion. In this way, it is possible to simply perform exclusive control for a request for the configuration information of a redundant system.

Abstract: A network controller including a virtual network setter that sets a virtual communication interface; a dummy packet generator that obtains communication progress information representing a communication progress state of communication of the second processing device with the connection destination device by causing the virtual communication interface to process a dummy packet that causes a receiver of the dummy packet to falsely recognize that the dummy packet is transmitted from the connection destination device; a reset packet generator that generates a reset packet containing the communication progress information; and a reset packet processor that removes, based on the reset packet, connection record information of the second processing device and the connection destination device, the connection record information being stored in the second processing device. This configuration prevents congestion when a processor is switched to another in a cluster system from occurring.

Abstract: An information processing apparatus is connectable to an external network, and includes a plurality of units, an external network interface, and an internal network interface. The external network interface is provided in at least one of the plurality of units, and connected to the external network. The internal network interface is provided in each of the plurality of units, and is connected to an internal network which is established by a second address system independent from a first address system of the external network connected to the external network interface. Then, the internal network interface of each of the plurality of units conducts communication between the plurality of units using the second address system. Therefore, the internal network having no influence on the external network can be established.

Abstract: The information processing apparatus includes a first device which is managed by a first OS, a second device which is managed by a second OS, and a processing unit. The processing unit causes the first OS and the second OS, the first OS to load a first maintenance driver corresponding to the first device, the first maintenance driver to perform maintenance control of the first device, the first OS to load a second maintenance driver corresponding to the second device, and the second maintenance driver to perform maintenance control of the second device. Therefore, it is possible to efficiently achieve the maintenance control of a plurality of devices, each of which is managed by a plurality of operating systems.

Abstract: An information processing apparatus is connectable to an external network (NW), and includes units including a loopback device (LDB) that conducts an inter-process communication in the OS; an external NW interface (NI) provided in at least one unit and connected to the external NW; and an internal NI provided in each unit and connected to an internal NW established by a second address system independent from a first address system of the external NW connected to the external NI. Each internal NI conducts inter-unit communications using the second address system. Each LDB driver includes a determining unit that determines whether a packet to be processed is addressed to a local unit or to a remote unit, and a guiding unit that guides the packet to be processed by the OS to a processing in accordance with a result of determination, thereby enabling an internal NW unaffected by an external NW.

Abstract: An information processing apparatus is connectable to an external network, and includes a plurality of units, an external network interface, and an internal network interface. The external network interface is provided in at least one of the plurality of units, and connected to the external network. The internal network interface is provided in each of the plurality of units, and is connected to an internal network which is established by a second address system independent from a first address system of the external network connected to the external network interface. Then, the internal network interface of each of the plurality of units conducts communication between the plurality of units using the second address system. Therefore, the internal network having no influence on the external network can be established.

Abstract: The information processing apparatus includes a first device which is managed by a first OS, a second device which is managed by a second OS, and a processing unit. The processing unit causes the first OS and the second OS, the first OS to load a first maintenance driver corresponding to the first device, the first maintenance driver to perform maintenance control of the first device, the first OS to load a second maintenance driver corresponding to the second device, and the second maintenance driver to perform maintenance control of the second device. Therefore, it is possible to efficiently achieve the maintenance control of a plurality of devices, each of which is managed by a plurality of operating systems.

Abstract: An internal unit acquires a first internal use address and uses the first internal use address to acquire a second internal use address. When receiving a notification of change of IP address from the main unit, the internal unit uses the second internal use address as a first internal use address to acquire a new second internal use address from the main unit.

Abstract: An internal unit acquires a first internal use address and uses the first internal use address to acquire a second internal use address. When receiving a notification of change of IP address from the main unit, the internal unit uses the second internal use address as a first internal use address to acquire a new second internal use address from the main unit.

Abstract: The network communication system is capable of communicating with many internal units at high speed, improving reliability of the system and decreasing a production cost and a development cost. The network communication system comprises a plurality of control units respectively connected to internal LANs, which connect internal units mutually. Each of the control units includes: a port opening/closing unit for selectively setting the control unit in an open state, in which the control unit acts as the unit having a common IP address of the control units with respect to the external network, or in a close state, in which an access to the control unit from the external network is prohibited; and a unit for solving the address duplication, which sets the control unit in the close state and changes the network address of the corresponding internal LAN so as to solve the address duplication. One of the control units is set in the open state, and the rest of the control units is set in the close state.

Abstract: The network communication system is capable of communicating with many internal units at high speed, improving reliability of the system and decreasing a production cost and a development cost. The network communication system comprises a plurality of control units respectively connected to internal LANs, which connect internal units mutually. Each of the control units includes: a port opening/closing unit for selectively setting the control unit in an open state, in which the control unit acts as the unit having a common IP address of the control units with respect to the external network, or in a close state, in which an access to the control unit from the external network is prohibited; and a unit for solving the address duplication, which sets the control unit in the close state and changes the network address of the corresponding internal LAN so as to solve the address duplication. One of the control units is set in the open state, and the rest of the control units is set in the close state.